While your staves are green the bark and sapwood will come off real easily, not so after they dry. Almost all my stash of osage has had the bark and sapwood removed and had the backs and ends sealed really well with shellac, did it all while the staves were fresh cut. Sure is nice to have grab a stave, do the final ring chasing and be ready to make a bow.
Lots of folk seal a stave with wood glue but shellac is the best, 3 or 4 coats.